Hy Kobyhud,
I am new in FusionPBX/Freeswitch, i has small knhow how about SIP, no much, i has a FusionPBX in GCP with some clients, each clients has a one domain in my FusionPBX, my FusionPBX stay in 4.5.13 Version.
My clients wants integration Microsoft Teams to make and receive calls...